Please understand that volunteer Community Members here are not the same as Tech or Customer Support but, many here have quite a bit of hands-on experience using both Square's Apps and Hardware.
I'm thinking you have to start all over by trying a Force shutdown on your reader or hard reset:
* Plug in the reader for at least 20 minutes to be sure it’s charged.
* While the reader is charging, use a bobby pin, pen cap, or paper clip to firmly press and hold the button on the reader for 20 seconds.
* After 20 seconds, release the button and wait 10 seconds.
* Press the button again to turn the reader on and observe any lights on the reader.
Just some other things:
The Reader connects to your phone via BlueTooth and the Square App (POS) does need an internet connection for live transactions but, can do offline transactions if necessary. The App can connect to the internet using your phones data connection if you're somewhere that you can't connect to the internet (i.e. outdoor market, etc.)
Just for reference -
What do the lights mean?
The four LED lights displayed on your reader will tell you all you need to know
about your reader.
Connecting your reader:
Four orange lights flashing --- Reader is in pairing mode
Four green lights ------------- Reader has successfully paired
Four red lights --------------- Reader failed to pair
While accepting a payment:
One green light ------- Reader is ready to take a payment
Moving green lights --- Reader is processing a payment
Four green lights ----- Payment was accepted
Four red lights ------- Payment was declined
Note: If you don’t see one green light to initiate a payment after 30 seconds,
please tap “Re-enable Apple Pay and Contactless” in the app.
Checking your battery:
Four green lights ------ Battery is fully charged
Three green lights ----- Battery is 75% charged
Two green lights ------- Battery 50% charged
One solid red light ---- Battery 25% charged
One blinking red light - Battery is low and charge immediately
If your reader is completely out of battery, you will see two scrolling red lights
when you reconnect your reader to power and it initiates charging.
